Truck for railway-cars



(N0 Model.)

5 SheetsSheet 2. L. PFINGST & S. A. BEMIS.

TRUCK FOR RAILWAY CARS.

Patented Nov. 11,1890.

Ens um, mwo-umm, wAsmuoron, n. c.

(No Model.) 5 Sheets-Sheet 3.

L. PFINGST & S. A. BEMIS.

TRUGK FOR RAILWAY CARS Patente d Nov. 11, 1890.

(No'ModeL) 5 SheetsShe'et 4. L. PPINGST & S. A. BEMIS.

TRUCK FOR RAILWAY GARS No. 440,365.

Paten'te d Nov. 11, 1890.

(No Model.)

I 5 Sheets-Sheet 5. L. PFING-ST 8: S. A. BEIVIIS.

TRUCK FOR RAILWAY CARS.

No. 440,365. Patented Nov, 11, 1890.

UNITED STATES LOUIS PFINGST, OF BOSTON, AND SUMNER A. BEMIS, OF SPRINGFIELD,

MASSACHUSETTS. I

TRUCK FOR RAILWAY-CARS.

SPECIFICATION forming part of Letters Patent No. 440,365, dated November 1 1, 1890.

Application filed September 3, 1890. Serial No. 363,868. (No model.)

To aZZ whom, it may concern:

Be it known that we, LOUIS PFINGST and SUMNER A. BEMIs, citizens of the United States, residing at Boston and Springfield, respectively, in the counties of Suffolk and Hanipden and State of Massachusetts, have invented new and useful Improvements in Trucks for Railway-Cars, of which the following is a specification.

This invention relates to improvements in trucks for railway-cars, the purpose of the invention being the provision of a truck which has capabilities for supporting the car-body in a most easy manner, for freedom of swivel in any desired degree relative to the car-bod y when in use thereunder, and for supporting the motor in a most efficient manner, whereby while the same is easily carried and cushioned on the truck it has notimparted thereto the undue jumping or bounding motion now commonly incidental to motors mounted on trucks of present constructions.

The invention consists in the construction and combination of parts, all substantially as will hereinafter more fully appear, and be set forth in the claims.

Reference is to be had to the accompanying drawings, in which the present invention is illustrated and in which similar characters of reference indicate corresponding parts in all the views.

Figure 1 is a plan view of the truck, and Fig. 2 is a side elevation thereof. Fig. 3 is a view in the nature of a diagram plan to illustrate in a double-truck car on a curve the relations of the car-body and the two trucks thereunder. Fig. 4 is a sectional elevation on a scale larger than the preceding views, taken transversely of the bolster and showing the means provided for supporting one end of the motor; and Fig. 5 is a plan view of the same. Fig. 6 is a perspective view to illustrate the construct-ion of the bolster; and Figs. 7 and 8 are, respectively, vertical cross-sections taken on the lines 7 7 and 8 8, Fig. 6. Fig. 9 is a view in perspective of the axle-box embodying externally a special construction for use in connection with the present truck and also a portion of one of the side supporting yokebeams, said parts being disengaged the one from the other. Fig. 10 is a sectional elevation of the parts last above named and in their relations of working engagement. Figs. 11 and 12 are perspective views in illustration of details of construction to be hereinafter referred to.

In the drawings, A A represent a pair of yoke-beams ranging longitudinally one at each side of the truck, and each consisting of the pair of inverted or hanging yokes a a and the intermediate and uniting-beam b, which beam, as here shown, consists of the paired bars, which by their ends are bolted to the end extensions of the yokes. The construction, as well as the approved mechanical design of the yokes for the yoke-beam, is most clearly shown in Figs. 9 and 10, wherein it will be seen that each yoke embodies a pair of opposing and longitudinally-ranging cheekpieces 17 17, having transversely a considerable degree of separation, said cheek-pieces intermediately and at their upper portions having the recesses l6 l6, and at or near the bases of said recesses there is a uniting crossweb 15, and the said cheek-pieces are further supported and braced the one upon the other by suitable webs and extensions in substance as shown.

Each axle-b02113, which internally is of any desired construction, is provided with horizontal extension-lugs 18, which are projected radially or laterally in relation to the length of the car-wheel axle, and an engagement is had between the lug-provided axle-boxes at each side of the truck and the yokes, whereby the yoke-beam is supported on said axle-boxes by the rest 011 said lugs 18 of the bolts or supports 19 19, sustained upon and horizontally extended between the opposing cheek-pieces. The support of said bolts 19 is through the medium of the cushions 20 20, interposed between the said lugs and said bolts, and in order that the bearing on said cushions may be most effectively maintained by said cross supporting-bolts 19 19 socketed plates or cups 21.

are provided, which have on their tops 0rheads the grooves 22 for engagement with said bolts, and in thesocket-depressions of which the said cushions rest. It will be further seen that below the said bolts 19 19 in each yoke there is another pair of bolts 23 23, similarly transversely disposed and supported,between which and the bottom of said axle-box lugs 18 18 are placed steadyingcushions 20 20, the cup-socket plates, similar to the one 2l,being provided, and thus it will be seen that the axle-box lugs are, as it were, clamped between upper and lower pairs of rigidly-supported springs or cushions, and while the weight of the yoke is sustained from the top of said axle-boxlugs through the bolts 19 and the upper cushions the lower cushions are deemed advantageous auxiliaries in the equipment of the truck for its most efficient service.

There is shown, as applied in the perspective View of the yoke, Fig. 9, cap-pieces c c for inclosing the spaces between the cheek-pieces forward and to the rear of the journal-box recess 16; but said cap-pieces, in lieu of being formed of two independent pieces, may be made in one piece, as shown in. Fig. 12, the middle of which overlies the axle-box.

It will be noted in Fig. 1 that each axlebox is provided on its opposite sides near its outer end with vertical lips 12, with which the external faces of the outer cheek-pieces of each yoke have an engagement, and said lips 11 v and the car-wheel hubs form stops or abutments to prevent any lateral deflection or shifting of the yokes. The bolster D enibodies features of novelty both as to the construction thereof and as to the means for its attachment transversely relatively to the intermediate beams 12 of two compound yokes at the sides of the truck. The bolster consists of two parallel section's h j'one above the other-the lower one being rigidly supported on the yoke-beams b b and the upper section spring-supported from the lower one.

7 To the intermediate portion of each yokebeam 6 is fixed one or more blocks f, (see Fig. 6,) on each of which blocks the upper portion of a stirrup-frame g is secured, and on the lower member 30 of said stirrup the end portion of said lower bolster-section j is supported. The springsl Z, which are interposed between the bolster-sections for the support of the upper section rest upon the bottoms of tubular cases an m, which are formed on or secured to said lower section j, said springs projecting above the tops of said casings, which are formed open, and the tops of said springs are borne upon by the upper walls of cases n n, which are formed on or secured to the upper bolster-section, said upper bolster-cases being open at their lower ends and fitting over said lower section-cases and capable of a telescoping action thereon, as the said upper section has a rising and falling movement in the use of the truck. At each end of the bolster and on and above the yoke-beam thereat there is fixed a stirrup-shaped part 32 for limiting the upward movement of the upper bolstering disposed toward each other, but havinga considerable degree of separation, as indicated by the space as; also, the blocks f for the support of the lower bolster-section are preferably formed of T shape, as seen in the perspective view, Fig. 6, the lateral members 33 33 of which overlying and resting upon the upper edges of the parallel and separated bars of the yoke-beam b, the median inelnberof said block extending downwardly between said separated bars of the yoke-beam.

4" represents the truck center plate secured on the upper bolster-section, which is also provided with truck side bearing-plates, one of which is shown at s in Fig. 6, and which resists the chafing-plate u of the car-body.

As provision for the support of one end of the electric motor, which is indicated by yin the drawings, parallel with the bolster and to the front or rear thereof, as the case may be, is a transverse girder or channel-iron F, secured by its end portions, and for its support upon the yoke-beams b b at opposite sides of the truck, on the middle portion of which are secured'and projected longitudinally of the truck therefrom a pair of stirru p-shaped members 0 0, separated from each other and each having the upper and lower arms 40 40, said arms 40 40 of both pairs carrying on their proximate faces cushions 42 42, and between the cushions of each superposed pair are confined the ends of a short beam q, ranging transversely of the truck and on which the nose of the motor is supported.

The channel-iron F, forming through the medium of the attachments described the support for the motor, is rigidly bolted to the cushioned yokes of the truck, which form the yoke-frame thereof, the compound yokes being united at the ends of the truck by the transverse girders t t, and said channel-iron, constituting in substance an intermediate cross-brace for the yoke-frame, forms an element of strength therefor, and of course it will be clear that while the motor has substantially the degree of vertical deflection or yield which may be permitted in the yokes through the cushions therefor, as described, it

does not have the spring or bounding motion of the car or of the upper section of the bolster. In addition to the said girderst t, which unite the ends of the yoke or truck frame and which are in substantially the plane of the axles and the intermediate transverse channel-iron F, diagonal braces z z are provided at each corner of the truck-f rame between and connected to the said girders t and the outer extensions of the yokes, and under such construction a most simple, strong, and rigid truck-frame is produced, one which will not warp or wind and one which when in place Figs. 2, 9, and 10, that the top of the yoke at each side of the truck is below the level of the top of the axle box, (instead of, as is usual,

no impediment to such swivel.

Having fully described our invention, what we claim, and desire to secure by Letters Patent, is

1. In a truck for railway-cars, in combination, axle-boxes provided with forwardly and rearwardly extended lugs, a compound yoke comprising a pair of inverted yokes and longitudinal uniting-beams, each yoke having a recess within its upper portion for the disposition therein of the axle-box proper and having portions to the front and rear of said recess which overlie said axle-box lugs, and cushions between said portions and said lugs, whereby all parts of said yoke-beam are below the tops of the axle-boxes, substantially as and for the purpose described.

2. In a truck for railway-cars, in combination,the axle-boxes provided with forwardly and rearwardly extended lugs, a compound yoke comprising apair of inverted yokes and a longitudinal uniting-beam, each yoke embodying opposing cheek-pieces transversely separated and intermediately and at its upper side provided with a recess for the disposition therein of the journal-box proper, the said extension-lugs of the box being disposed between said cheek-pieces. transverse supports of and between said cheek-pieces above said lugs, and cushions interposed between said lugs and said supports, for the purpose set forth.

3. In a truck for railway-cars, in combination, axle-boxes provided with forwardly and rearwardly extended lugs, a compound yoke comprising a pair of inverted yokes and alongitudinal uniting-beam, each yoke embodying op posing cheek pieces transversely separated and intermediately at its upper side provided with a recess for the disposition therein of the journalbox proper, the said extensionlugs of the box being disposed between the said cheek-pieces, and transverse supports of and between said cheek-pieces both above and below said lugs, and between which supports said lugs are disposed, substantially as described.

at. In a truck for railway-cars, in combination, axle-boxes provided with forwardly and rearwardly extended lugs, an inverted yokethat is, one having a recess in its upper portion for the disposition thereof of the axlebox proper and comprising opposing cheekpieces which are arranged forward and rearward of said recess and provided at and between their upper portions with the supporting-bolts 19 19the said extension-lugs of the box being disposed between said cheek-pieces, cushions resting on said lugs, and socketed plates or cups bearing on the tops of said cushions and also bearing on the under side of said bolts, substantially as described.

In a truck for a railway-car, the combination, with the axle-box lug or extension, of a yoke formed with opposing cheek-pieces having a transverse supporting-bolt, as 19, a cushion bearing on said lug, and a socketed plate or cup bearing on the said cushion and having in its surface adjacent said bolt a groove 22 for its engagement therewith, substantially as described.

6. In a truck for railway-cars, in combination, axle-boxes having forward and rearward lugs, the compound yoke at each side of the truck, comprising a pair of inverted yokes and a longitudinal uniting-beam and each yoke embodying opposing cheek-pieces and intermediately at its upper side provided with a recess for the disposition therein of the journal-box proper, the said lugs being disposed between said cheek-pieces, transverse supporting-bolts 19 19 between said cheekpieces both above and below said lugs, cushions bearing upon the upper and under sides of each of said lugs, and socketed plates or cups bearing upon said cushions and each having a groove 22 therein by which said cups have a bearing engagement with said bolts 19 19, substantially as shown.

7. In a railway-car, the axle-boxes having extension-lugs, a truck or yoke frame supported through cushions on said lugs, a bolster-section spring-supported on said truck or yoke frame, and the car-body mounted on said bolster-section, for the purpose described.

8. In an electric-railway car,axle-boxesl1aving extension-lugs, a truck or yoke frame cushion-supported on said lugs and provided with a rigid transverse motor -supporting beam or girder, a bolster-section spring-supported on said truck-frame, and the car-body mounted on said bolster-section, substantially as described.

9. In a truck for railway-cars, the combination, with a truck or yoke frame, of a transverse bolster-section rigidly supported on said frame, another bolster-section spring-supported from said first-named section, and a member, as the yoke 32, for limiting the upward movement of the secondary bolster-section, substantially as described.

10. In atruck for railway-cars, the combination, with a truck or yoke frame embodying intermediately of its length parallel and separated bars forming the beams 12, of the T- shaped blocks f, resting by their lateral mem- IIO bers on the upper edges of said bars, the median members of said blocks extending down- Wardly between the bars and the stirrupframes by their upper members supported on said blocks and hanging below said truckframe, the transverse bolster-section by its end portions supported on said stirrups, and another bolster-section spring-supported on said first-named section, substantially as described.

11. In a truck for electric cars, the combination, with a truck-frame provided with a rigid transverse beam or girder having secured thereon and projected longitudinally therefrom a pair of transversely-separated stirrupshaped inembers,each having upper and lower arms 40 40, of cushions 42 42, bearing upon the proximate faces of said arms, and a beam q, interposed between said pairs of cushions and forming a support for one portion of an electric motor, substantially as described and shown.

12. In a truck for railway-cars, the combination,witl1 the axle-boxes having extension lugs 18 18 and provided on their sides near their outer ends with vertical lips 'u o, of a yoke or truck frame comprising at its sides yokes and uniting-beams, each yoke embodying opposing cheek-pieces and intermediately and at its upper side provided with a recess for the journal-box, and the yokes between said cheek-pieces provided with transverse supports whereby the yokes may be supported on said lugs, substantially as described.

13. In a railway-truck, the combination, with the axle-boxes, of a series of yokes supported thereon, beams intermediately of and uniting pairs of said yokes, which are at each side of the truck, stirrups suspended from and intermediately of said beams, a bolster support-ed on said stirrups, and the car-body mounted on said bolster.

14. A yoke comprising the opposing cheekpieces, with the recess 16 in its upper side for the disposition therein of the axle-box, and a cap 0, supported on the upper edges of said cheek-pieces, for covering the spaces between the same at front and rear of the box.

LOUIS PFINGST. SUMNER A. BEMIS. \Vitnesses:

H. A. CHAPIN, G. M. CHAMBERLAIN. 

